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Alcohol and glutamate

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https://www.readbyqxmd.com/read/28341943/cross-species-translational-findings-in-the-discriminative-stimulus-effects-of-ethanol
#1
Daicia C Allen, Matthew M Ford, Kathleen A Grant
The progress on understanding the pharmacological basis of ethanol's discriminative stimulus effects has been substantial, but appears to have plateaued in the past decade. Further, the cross-species translational efforts are clear in laboratory animals, but have been minimal in human subject studies. Research findings clearly demonstrate that ethanol produces a compound stimulus with primary activity through GABA and glutamate receptor systems, particularly ionotropic receptors, with additional contribution from serotonergic mechanisms...
March 25, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28322866/decreased-anxiety-voluntary-ethanol-intake-and-ethanol-induced-cpp-acquisition-following-activation-of-the-metabotropic-glutamate-receptor-8-mglur8
#2
Amine Bahi
Metabotropic glutamate receptors (mGluRs) are important modulators of excitatory neurotransmission, and have been implicated in addiction to alcohol and anxiety-related behaviors. However, the behavioral consequence and contribution of individual subtypes are not known yet. This study determined the effects of mGluR8 activation on anxiety-like behavior, voluntary ethanol intake and ethanol-induced conditioned reward. To this aim, anxiety and spontaneous behavior were measured in C57BL/6J mice using the elevated plus maze (EPM), open field (OF) and light-dark box (LDB) tests after systemic injection of the selective mGluR8 agonist (S)-3,4-dicarboxyphenylglycine ((S)-3,4-DCPG)...
March 17, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28318228/expedited-phonon-transfer-in-interfacially-constrained-polymer-chain-along-self-organized-amino-acid-crystals
#3
Liwen Mu, Yifan Li, Nitin Mehra, Tuo Ji, Jiahua Zhu
In this work, poly(vinyl alcohol) (PVA)/amino acid (AA) composites were prepared by a self-organized crystallization process. Five different AAs (cysteine, aspartic acid, glutamic acid, ornithine, and lysine) were selected based on their similar functional groups but different molecular structures. The different PVA-AA interactions in the five PVA/AA composites lead to two crystal patterns, i.e., continuous network (cysteine and lysine) and discrete particles (glutamic acid, ornithine, and aspartic acid). Scanning thermal microscopy is then applied to map the distribution of thermal conduction in these composites...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28314177/gintonin-attenuates-depressive-like-behaviors-associated-with-alcohol-withdrawal-in-mice
#4
Hyeon-Joong Kim, Sang-Deuk Park, Ra Mi Lee, Byung-Hwan Lee, Sun-Hye Choi, Sung-Hee Hwang, Hyewhon Rhim, Hyoung-Chun Kim, Seung-Yeol Nah
BACKGROUND: Panax ginseng Meyer extracts have been used to improve mood and alleviate symptoms of depression. However, little is known about the extracts' active ingredients and the molecular mechanisms underlying their reported anti-depressive effects. METHODS: Gintonin is an exogenous lysophosphatidic acid (LPA) receptor ligand isolated from P. ginseng. BON cells, an enterochromaffin cell line, and C57BL/6 mice were used to investigate whether gintonin stimulates serotonin release...
March 9, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28303497/n-acetylcysteine-prevents-alcohol-related-neuroinflammation-in-rats
#5
Ricardo Schneider, Solange Bandiera, Débora Guerini Souza, Bruna Bellaver, Greice Caletti, André Quincozes-Santos, Elaine Elisabetsky, Rosane Gomez
Alcoholism has been characterized as a systemic pro-inflammatory condition and alcohol withdrawal has been linked to various changes in the brain homeostasis, including oxidative stress and glutamate hyperactivity. N-acetylcysteine (NAC) is an anti-inflammatory and antioxidant multi-target drug with promising results in psychiatry, including drug addiction. We assessed the effects of NAC on the serum and brain inflammatory cytokines after cessation of chronic alcohol treatment in rats. Male Wistar rats received 2 g/kg alcohol or vehicle twice a day by oral gavage for 30 days...
March 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28291298/-neurobiology-of-alcohol-dependence-and-implications-on-treatment
#6
Ertuğrul Eşel, Köksal Dinç
The process of alcohol dependence has been conceptualized as a progress from controlled alcohol intake to compulsive alcohol consumption or a shift from alcohol intake for pleasure to compulsory alcohol seeking behavior. Hereditary and physical factors and the interaction of individuals with their environment, as well as permanent changes in the neurotransmitter and neurohormonal systems in the brain due to alcohol use, play the most important role in the etiology of alcohol dependence. The effects of ethanol on the neurotransmitter, neuropeptide and neuroendocrine systems not only account for its acute physiological and euphoric/reinforcing effects but also seem to be responsible for the development of dependence...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
https://www.readbyqxmd.com/read/28273963/benefits-of-alcohol-on-arsenic-toxicity-in-rats
#7
Purnima Singh, Shubha Ranjan Dutta, Deepak Passi, Jaya Bharti
INTRODUCTION: It has been demonstrated earlier that exposure to ethanol and/or arsenic compounds (such as sodium arsenite) produces toxic effects as shown by both in vitro and in vivo experiments. Chronic exposure of humans to arsenic through drinking water, pesticides or consumption of alcoholic beverages has produced major health problem and concern in recent years. Water being one of the main ingredients for alcohol formation (beer fermentation process) can lead to contamination with arsenic...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28270746/effects-of-repeated-ethanol-exposures-on-nmda-receptor-expression-and-locomotor-sensitization-in-mice-expressing-ethanol-resistant-nmda-receptors
#8
Carolina R den Hartog, Meghin Gilstrap, Bethany Eaton, Daniel H Lench, Patrick J Mulholland, Gregg E Homanics, John J Woodward
Evidence from a large number of preclinical studies suggests that chronic exposure to drugs of abuse, such as psychostimulants or ethanol induces changes in glutamatergic transmission in key brain areas associated with reward and control of behavior. These changes include alterations in the expression of ionotropic glutamate receptors including N-methyl-D-aspartate receptors (NMDAR) that are important for regulating neuronal activity and synaptic plasticity. NMDA receptors are inhibited by ethanol and reductions in NMDA-mediated signaling are thought to trigger homestatic responses that limit ethanol's effects on glutamatergic transmission...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28270566/orbitofrontal-neuroadaptations-and-cross-species-synaptic-biomarkers-in-heavy-drinking-macaques
#9
Sudarat Nimitvilai, Joachim D Uys, John J Woodward, Patrick K Randall, Lauren E Ball, Robert W Williams, Byron C Jones, Lu Lu, Kathleen A Grant, Patrick J Mulholland
Cognitive impairments, uncontrolled drinking, and neuropathological cortical changes characterize alcohol use disorder. Dysfunction of the orbitofrontal cortex (OFC), a critical cortical sub-region that controls learning, decision-making, and prediction of reward outcomes, contributes to executive cognitive function deficits in alcoholics. Electrophysiological and quantitative synaptomics techniques were used to test the hypothesis that heavy drinking produces neuroadaptations in the macaque OFC. Integrative bioinformatics and reverse genetic approaches were used to identify and validate synaptic proteins with novel links to heavy drinking in BXD mice...
March 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28242339/metabotropic-and-ionotropic-glutamate-receptors-as-potential-targets-for-the-treatment-of-alcohol-use-disorder
#10
REVIEW
Sunil Goodwani, Hannah Saternos, Fawaz Alasmari, Youssef Sari
Emerging evidence indicates that dysfunctional glutamate neurotransmission is critical in the initiation and development of alcohol and drug dependence. Alcohol consumption induced downregulation of glutamate transporter 1 (GLT-1) as reported in previous studies from our laboratory. Glutamate is the major excitatory neurotransmitter in the brain, which acts via interactions with several glutamate receptors. Alcohol consumption interferes with the glutamatergic signal transmission by altering the functions of these receptors...
February 24, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28239076/the-analysis-of-polymorphism-of-alcohol-dehydrogenase-3-adh3-gene-and-influence-of-liver-function-status-in-indonesia
#11
Suhartini, Mustofa, Yudha Nurhantari, Bambang Udji Djoko Rianto
Indonesian culture actually has no historical record of behaviors in consuming alcohol, but there are many recent reports of alcohol abuse among Asian people involving their traditional drink. In genotype studies, the damage of the liver caused by consuming alcohol is influenced by the presence of the polymorphism enzyme gene. The lack of study regarding such topic is a signal to further investigate ADH3 gene distribution and its effect on liver function status. The total of 197 research subjects of Javanese descent received alcohol dehydrogenase 3 (ADH3) genetic polymorphism and liver status tests in the city of Yogyakarta, Indonesian...
January 31, 2017: Kobe Journal of Medical Sciences
https://www.readbyqxmd.com/read/28196273/sex-and-adolescent-ethanol-exposure-influence-pavlovian-conditioned-approach
#12
Aric C Madayag, Sierra J Stringfield, Kathryn J Reissner, Charlotte A Boettiger, Donita L Robinson
BACKGROUND: Alcohol use among adolescents is widespread and a growing concern due to long-term behavioral deficits, including altered Pavlovian behavior, that potentially contribute to addiction vulnerability. We tested the hypothesis that adolescent intermittent ethanol (AIE) exposure alters Pavlovian behavior in males and females as measured by a shift from goal-tracking to sign-tracking. Additionally, we investigated GLT-1, an astrocytic glutamate transporter, as a potential contributor to a sign-tracking phenotype...
February 14, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28192828/mr-spectroscopy-findings-in-retired-professional-rugby-league-players
#13
Andrew J Gardner, Grant L Iverson, Magdalena Wojtowicz, Christopher R Levi, Frances Kay-Lambkin, Peter W Schofield, Ross Zafonte, Sandy R Shultz, Alexander P Lin, Peter Stanwell
The aim of this study was to examine brain neurometabolite concentrations in retired rugby league players who had a history of numerous self-reported concussions. Participants were 16 retired professional rugby league players (ages 30-45 years) with an extensive history of concussion and participation in contact sports, and 16 age- and education-matched controls who had no history of neurotrauma or participation in contact sports. All completed a clinical interview, psychological and cognitive testing, and magnetic resonance spectroscopy (MRS) investigation...
March 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28159280/molecular-nutritional-characteristics-of-vinasse-pike-eel-muraenesox-cinereus-during-pickling
#14
Daian Chen, Yangfang Ye, Juanjuan Chen, Pingping Zhan, Yongjiang Lou
Vinasse pike eel (Muraenesox cinereus) is a traditional Chinese food with a characteristic flavour, taste, and nutritional composition. Its flavour is closely related to the molecular nutritional composition of this food pickled product. In this study, we characterised the changes in the nutritional composition of pike eel during vinasse pickling. Nuclear magnetic resonance spectroscopy revealed 33 components in eel, e.g. a range of organic acids, amino acids, alcohols, and sugars. Multivariate data analysis further revealed that the nutritional composition of eel undergoes major changes during pickling, which were highlighted by the consumption of sucrose and creatine, the accumulation of a range of organic acids, alcohols, glucose, and creatinine, as well as in the fluctuation of some amino acids...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28159272/improving-fermented-quality-of-cider-vinegar-via-rational-nutrient-feeding-strategy
#15
Zhengliang Qi, Die Dong, Hailin Yang, Xiaole Xia
This work aimed to find a rational nutrient feeding strategy for cider vinegar fermentation based on adequate information on the nutritional requirement of acetic acid bacteria. Through single nutrient lack experiment assay, necessary nutrient recipe for Acetobacter pasteurianus CICIM B7003 in acetous fermentation was confirmed. Compounds from the essential nutrient recipe were tested further to find out the key substrates significantly influencing cider vinegar fermentation. The findings showed that aspartate, glutamate, proline and tryptophan should be considered in detail for optimizing nutritional composition of cider...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28158462/nmda-glutamate-receptor-antagonism-and-the-heritable-risk-for-alcoholism-new-insights-from-a-study-of-nitrous-oxide
#16
John H Krystal, Ismene L Petrakis, Stephanie O'Malley, Suchitra Krishnan-Sarin, Godfrey Pearlson, Gihyun Yoon
No abstract text is available yet for this article.
January 31, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28118494/strain-dependent-effects-of-acute-alcohol-on-synaptic-vesicle-recycling-and-post-tetanic-potentiation-in-medial-glutamate-inputs-to-the-mouse-basolateral-amygdala
#17
Dominic A Gioia, Brian McCool
BACKGROUND: Inbred mouse strains are differentially sensitive to the acute effects of ethanol (EtOH) and are useful tools for examining how unique genomes differentially affect alcohol-related behaviors and physiology. DBA/2J mice have been shown to be sensitive to the acute anxiolytic effects of alcohol as well as the anxiogenic effects of withdrawal from chronic alcohol exposure, while B6 mice are resistant to both. Considering that the basolateral amygdala (BLA) is an important brain region for the acute and chronic effects of EtOH on fear and anxiety related behaviors, we hypothesized that there would be strain-dependent differences in the acute effects of EtOH in BLA slices...
January 24, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28110193/effects-of-polyphenol-compounds-melanin-on-nafld-nash-prevention
#18
Natalia Belemets, Nazarii Kobyliak, Oleksandr Virchenko, Tetyana Falalyeyeva, Tsyryuk Olena, Petro Bodnar, Oleksiy Savchuk, Tetyana Galenova, Martin Caprnda, Luis Rodrigo, Lubomir Skladany, Delian Delev, Radka Opatrilova, Peter Kruzliak, Tetyana Beregova, Lyudmyla Ostapchenko
BACKGROUND: One of the pathogenic mechanisms of the progression non-alcoholic liver disease (NAFLD) to nonalcoholic steatohepatitis (NASH) is the accumulation of reactive oxygen species (ROS). So, antioxidant therapy is necessary for successful treatment of the liver injury. We have paid attention to melanin produced by yeast Nadsoniella nigra strain X-1 as novel antioxidant and anti-inflammatory agents with low toxicity. In current study we aimed to investigate the preventive effect of melanin on the monosodium glutamate (MSG) induced NAFLD model in rats...
April 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28108359/synaptic-targets-chronic-alcohol-actions
#19
REVIEW
Marisa Roberto, Florence P Varodayan
Alcohol acts on numerous cellular and molecular targets to regulate neuronal communication within the brain. Chronic alcohol exposure and acute withdrawal generate prominent neuroadaptations at synapses, including compensatory effects on the expression, localization and function of synaptic proteins, channels and receptors. The present article reviews the literature describing the synaptic effects of chronic alcohol exposure and their relevance for synaptic transmission in the central nervous system. This review is not meant to be comprehensive, but rather to highlight the effects that have been observed most consistently and that are thought to contribute to the development of alcohol dependence and the negative aspects of withdrawal...
January 17, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28098946/negative-association-between-mr-spectroscopic-glutamate-markers-and-gray-matter-volume-after-alcohol-withdrawal-in-the-hippocampus-a-translational-study-in-humans-and-rats
#20
Ulrich Frischknecht, Derik Hermann, Nuran Tunc-Skarka, Guo-Ying Wang, Markus Sack, Julia van Eijk, Traute Demirakca, Claudia Falfan-Melgoza, Bertram Krumm, Sandra Dieter, Rainer Spanagel, Falk Kiefer, Karl F Mann, Wolfgang H Sommer, Gabriele Ende, Wolfgang Weber-Fahr
BACKGROUND: Both chronic alcohol consumption and alcohol withdrawal lead to neural tissue damage which partly recovers during abstinence. This study investigated withdrawal-associated changes in glutamatergic compounds, markers of neuronal integrity, and gray matter volumes during acute alcohol withdrawal in the hippocampus, a key region in development and maintenance of alcohol dependence in humans and rats. METHODS: Alcohol-dependent patients (N = 39) underwent magnetic resonance imaging (MRI) and MR spectroscopy (MRS) measurements within 24 hours after the last drink and after 2 weeks of abstinence...
February 2017: Alcoholism, Clinical and Experimental Research
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